Magnetrol Tuffy II T31 User manual

Side
Mounted
Float Level
Switch
®II




Read this Manual Before Installing
This manual provides information on the Tuffy®II Float
Level Switch. It is important that all instructions are read
carefully and followed in sequence. Detailed installation
and wiring instructions are included in this manual.
Conventions Used in this Manual
Certain conventions are used in this manual to convey
specific types of information. General technical material,
support data, and safety information are presented in
narrative form. The following styles are used for notes,
cautions, and warnings.
Notes
Notes contain information that augments or clarifies an
operating step. Notes do not normally contain actions.
They follow the procedural steps to which they refer.
Cautions
Cautions alert the technician to special conditions that
could injure personnel, damage equipment, or reduce
a component’s mechanical integrity. Cautions are also
used to alert the technician to unsafe practices or the
need for special protective equipment or specific
materials. In this manual, a caution box indicates a
potentially hazardous situation which, if not avoided,
may result in minor or moderate injury.
Warnings
Warnings identify potentially dangerous situations or
serious hazards. In this manual, a warning indicates an
imminently hazardous situation which, if not avoided,
could result in serious injury or death.
Safety Messages
Follow all standard industry procedures for servicing elec-
trical equipment when working with or around high
voltage. Always shut off the power supply before touching
any components.
WARNING! Explosion hazard. Do not connect or dis-
connect equipment unless power has been switched off or
the area is known to be non-hazardous.
Low Voltage Directive
For use in Installations Category II, Pollution Degree 2.
If equipment is used in a manner not specified by the
manufacturer, protection provided by equipment may be
impaired.
Notice of Trademar , Copyright, and Limitations
Magnetrol®& Magnetrol®logotype, and Tuffy®are registered
trademarks of Magnetrol®International, Incorporated.
Copyright 2018 Magnetrol®International, Incorporated.
All rights reserved.
Performance specifications are effective with date of issue
and are subject to change without notice. Magnetrol®
reserves the right to make changes to the product described
in this manual at any time without notice. MAGNETROL
makes no warranty with respect to the accuracy of the
information in this manual.
Warranty
All MAGNETROL mechanical level and flow controls are
warranted free of defects in materials or workmanship for
five full years from the date of original factory shipment.
If returned within the warranty period; and, upon factory
inspection of the control, the cause of the claim is
determined to be covered under the warranty; then,
MAGNETROL will repair or replace the control at no cost
to the purchaser (or owner) other than transportation.
MAGNETROL shall not be liable for misapplication,
labor claims, direct or consequential damage or expense
arising from the installation or use of equipment. There are
no other warranties expressed or implied, except special
written warranties covering some MAGNETROL products.
Quality Assurance
The quality assurance system in place at MAGNETROL
guarantees the highest level of quality throughout the com-
pany. MAGNETROL is committed to providing full
customer satisfaction both in quality products and quality
service.
The MAGNETROL quality assurance system is registered
to ISO 9001 affirming its commitment to known interna-
tional quality standards providing the strongest assurance
of product/service quality available.
44-607 Tuffy®II Liqui Level Switch

44-607 Tuffy®II Liqui Level Switch
Table of Contents
1.0 Installation
1.1 Unpacking.............................................................4
1.2 Before You Begin...................................................4
1.2.1 Site Preparation ..........................................4
1.2.2 Equipment and Tools..................................4
1.3 Mounting ..............................................................5
1.3.1 Mounting an NPT Tuffy®II.......................5
1.3.2 Mounting a Flanged Tuffy®II.....................5
1.3.3 Mounting External Cage Tuffy®II..............5
1.4 Wiring...................................................................7
1.5 Adjustable Differential...........................................8
1.6 Interface ................................................................9
2.0 Reference Information
2.1 Description ...........................................................9
2.2 Theory of Operation...............................................10
2.3 Troubleshooting...................................................10
2.3.1 External Causes ........................................10
2.3.2 Tuffy®II Causes........................................10
2.4 Preventive Maintenance.......................................12
2.4.1 What to Do..............................................12
2.4.2 What to Avoid..........................................13
2.4.3 Switch Mechanism Replacement...............13
2.5 Agency Approvals ................................................14
2.6 Parts ....................................................................14
2.6.1 Replacement Parts ....................................14
2.6.2 Recommended Spare Parts........................14
2.7 Specifications.......................................................15
2.7.1 Functional ................................................15
2.7.2 Performance..............................................15
2.7.3 Switch Temperature Ratings .....................16
2.7.4 Physical.....................................................19
2.8 Model Numbers ..................................................21
2.8.1 Standard Narrow Differential Models.......22
2.8.2 Chamber Model Number .........................23
2.8.3 Interface Models.......................................24
2.8.4 Adjustable Wide Differential Models........26
Tuffy®II Liquid Level Controls
with Electric Switches

1.0 Installation
This section provides detailed procedures for properly
installing the Tuffy®II Liquid Level Switch.
 If equipment is use in a manner not specifie by
manufacturer, protection provi e by equipment may be
impaire .
1.1 Unpacking
Unpack the instrument carefully. Inspect all units for damage.
Report any concealed damage to the carrier within 24 hours.
Ensure all components have been removed from the packing
material. Check all the contents against the packing slip and
report any discrepancies to the factory. Check the nameplate
model number to ensure that it agrees with the packing slip
and purchase order. Record the serial and model numbers
for future reference when ordering parts.
Mo el Number
Serial Number
1.2 Before You Begin
 
1. Ensure that the length and inside diameter of the mounting
nozzle are sized correctly for the TUFFY II model and the
required actuation levels. Maximum nozzle lengths for each
model are specified in .
2. Ensure that the mounting nozzle or coupling is within 3°
of horizontal. If mounting the TUFFY in an external cage,
ensure that the cage is mounted within 3° of horizontal
and that the top/bottom piping is within 3° of vertical in
all directions.
3. Ensure that the area is free of metallic particles which might
be attracted to the magnet holder/counterbalance and inter-
fere with the function of the TUFFY II.

No special equipment or tools are required to install
the TUFFY Liquid Level Switch. The following items are
recommended:
• Wrenches, flange gaskets and flange bolting appropriate for
process connection(s).
• Pipe wrench
• Level
• Flat head screwdriver
44-607 Tuffy®II Liqui Level Switch
4


Tuffy® II Maximum Nozzle Lengths
(distance from face of mounting flange
to end of 3" sch 80 nozzle or the tip of
the mounting threads to the end of 2"
nozzle with ID same as 2" NPT)
T31 or T35
with NPT connection 3.29"
T31, T32, T33, T34 or T35
with flange connection 3.35"
T3B 5.80"
T3C 4.35"

1.3 Mounting
The TUFFY II Liquid Level Switch is available with a 2"
NPT mounting bushing, a variety of flange mountings and
external cages for mounting outside of the vessel.
 This instrument is inten e for use in Installation Category II,
Pollution Degree 2.
 II
1. Apply either Teflon®tape or appropriate lubricant to the
mounting threads to prevent galling.
2. Engage the 2" NPT by hand to avoid damaging threads.
3. Using a pipe wrench, rotate the unit clockwise until threads
are tight in mounting. Ensure that the conduit entry points
down. 
 The TUFFY II must be installe with the con uit connection
pointing ownwar to ensure correct switching action.
 II
1. Have proper flange bolting and gasket on hand.
2. Cut and remove plastic shipping straps.
3. Carefully align TUFFY flange raised face (cladding) with
the face of the vessel mounting flange. Slide the flange on
the control to the vessel mounting flange and align bolt
holes. Ensure that the conduit entry is pointing down.

4. Ensure that the flange gasket is seated properly. Install
flange bolts and nuts.
5. Tighten alternating flange bolts in a star pattern.
 The TUFFY II must be installe with the con uit connection
pointing ownwar to ensure correct switching action.
 II
A typical TUFFY external cage installation is shown in
.
1. Install cage so that trappings are within 3° of vertical in all
directions. Check installation with a level.
2. Mount cage as close to vessel as possible to provide more
accurate level in cage. Long pipe runs may result in cooler,
denser liquid than that in the vessel and cause inaccurate
level in the TUFFY cage.
44-607 Tuffy®II Liqui Level Switch 5






Conduit Entry
(down)
Conduit Entry
(down)
C
LC LC L
Pressure
Vessel
Shut–off
Valve
Safety
Check
Valve
Shut–off
Valve
Drain Valve
Switch
Actuation
Level
NPT
Conduit
Connection
C
L

44-607 Tuffy®II Liqui Level Switch
6
















3. Use pipe of sufficient size and strength to support the
control. Provide a hanger or stand to help support the
weight of the cage if necessary.
4. All piping should be straight and free of low spots or pockets.
Lower liquid line should drain toward vessel and upper line
toward control.
5. Shut-off valves are recommended for installation between
the vessel and the cage assembly.
6. Once external cage is mounted, install TUFFY II into cage
per Section 1.3.1 or Section 1.3.2 on page 5.
 Operation of all buoyancy type level evices shoul be one
in such a way as to minimize the action of ynamic forces on
the float or isplacer sensing element. Goo practice for
re ucing the likelihoo of amage to the control is to equal-
ize pressure across the evice very slowly.
1.4 Wiring
NOTE: A switch or circuit breaker shall be installe in close proximity
to equipment an within easy reach of operator. It shall be
marke as the isconnecting evice for the equipment.
NOTE: For supply connections in installations with ambient tempera-
ture up to +158° F (+70° C), use wire with a minimum rating of
+167° F (+75° C), as require by process con itions.
Installations with ambient temperatures up to +176° F (+80° C)
require wire with a minimum rating of +185° F (+85° C) as
require by the process con itions. Use a minimum of 14 AWG
wire for power an groun fiel wires.
On high temperature applications above +250° F (+120° C)
process temperature, a suitable heat resistant covered wire
should be used between the TUFFY II and the first junction
box located in a cooler area. On non-hazardous applications,
flexible conduit may be used between TUFFY II and the first
junction box. Conduit should have sufficient slack to permit
removal of the switch assembly.
1. Unscrew and remove switch cover.
2. Pull in supply wires and connect to the proper terminals,
 & . Please note that some switches are
reverse acting. Be sure to connect to proper terminals
according to wiring diagrams.
NOTE: Ensure that excess wire oes not interfere with replacement of
the switch cover or movement of the switch mechanism.
NOTE: The groun screw (green hea ) is locate to the right of the
switch. Housing must be groun e via protective groun screw
in base of housing. Hazar ous locations require a con uit seal
within 18" (457 mm) of the con uit connection, an the con uit
must be screwe into the housing a minimum of 5 times.
44-607 Tuffy®II Liqui Level Switch 7

NOTE: For ATEX Flameproof Installations, the cable entry evice
must be certifie in type protection flameproof enclosure “ ”,
suitable for the con itions of use an currently installe .
For ambient temperatures above +55° C, suitable heat resistant
cables must be use .
3. Replace the switch cover.
NOTE: Han -tighten cover. Then using a persua er, tighten 1⁄4turn
more. This entire process shoul take approximately 61⁄2turns.
4. To prevent the entrance of air, seal housing at the conduit
outlet with a suitable pipe compound.
5. Connect power supply to TUFFY and test switch action by
varying level in vessel.
NOTE: If the switch mechanism fails to function properly, ensure that
the con uit connection is vertically aligne an pointing own.
1.5 Adjustable Differential
The Adjustable Differential TUFFY II, model T3C, may be
set in the field for one of a variety of level differentials. By
specific placement of the stops in the holes of the adjust-
ment plate, the level differential may be changed.
To determine the best placement of the stops for your appli-
cation, refer to  and . By subtracting the actuat-
ing level of the lower hole on the adjusting plate on falling
level from the actuating level of the upper hole on the
adjusting plate on rising level, the total level differential
between the switch actuating and resetting can be calculated.
Example 1: To determine the level differential of a unit with
a 7.50" stem and stops positioned in holes L & B, subtract
the actuating level of stop position B with a 7.50" stem
from the actuating level of stop position L.
6.01" -4.51" =1.50" level differential
Example 2: The level differential of a unit with a 12.25"
stem and stops positioned in holes C & G is as follows:
7.20"-(-8.06") =15.26"
 
 ABCDEFGHJKL
3.75 +0.16 +1.84 +3.54 +4.87 -1.47 n/a n/a -1.65 n/a +1.52 +4.10
 7.50 -0.12 +2.49 +5.14 +7.20 -2.65 n/a n/a -2.94 n/a +1.99 +6.01
12.25 -0.43 +3.36 +7.20 +10.20 -4.12 n/a n/a -4.54 n/a +2.62 +8.46
3.75 +1.51 +3.14 n/a n/a -0.39 -1.87 -3.21 0.16 -2.44 +3.32 n/a
 7.50 +1.98 +4.51 n/a n/a -0.99 -3.29 -5.37 -0.12 -4.16 +4.80 n/a
12.25 +2.61 +6.28 n/a n/a -1.69 -5.04 -8.06 -0.44 -6.31 +6.71 n/a
44-607 Tuffy®II Liqui Level Switch
8





D
C
B
A
E
J
F
G
K
L
H

Once the desired stop positions are determined, remove the
cotter pins holding the stops in the adjusting plate holes.
Move each stop to the desired location on the adjusting
plate and replace the cotter pins. Ensure that the float stem
is positioned between the two stops.
When determining stop positions, please note that some
stop position combinations are impossible due to the diame-
ter of the float stem. The following combinations are not
possible: Stop positions A & B, A & E, A & H, A & K,
B & C, B & K, C & D, C & K, C & L, D & L, E & F,
E & H, F & H, F & J, F & G and G & J.
1.6 Interface
Each interface unit is calibrated at the factory by precise
positioning of the calibration weight on the float stem.
Do not attempt to adjust calibration in the field. Calibration
weight should not be moved. If unit does not function
properly in interface service, consult factory.
2.0 Reference Information
This section presents an overview of the operation of the
TUFFY II Liquid Level Switches, including information on
troubleshooting common problems, maintenance proce-
dures, listings of agency approvals, lists of replacement and
recommended spare parts, and detailed physical, functional,
and performance specifications.
2.1 Description
The TUFFY II Liquid Level Switches are float actuated
devices designed for horizontal mounting in a tank or vessel
through threaded or flanged pipe connections. The compact
size allows for installation in small vessels while its many fea-
tures provide a variety of application uses. The single switch
mechanism is available in SPDT or DPDT forms on units
designed for fixed or adjustable, narrow or wide differential,
interface service and offset levels. This manual covers
TUFFY II level switches that have electric switches. For
TUFFY with a pneumatic switch, see bulletin 44-606.
44-607 Tuffy®II Liqui Level Switch

2.2 Theory of Operation
The TUFFY II achieves switching action through the use of a
magnetic switch mechanism and a magnet attached to the
float assembly. Separating the two magnets is a non-magnetic
pressure barrier.
The float along with the float magnet moves as the liquid
level changes. The float and switch magnets repel each other
causing movement of the switch magnet assembly, tripping
the switch and making or breaking an electrical circuit.
.
2.3 Troubleshooting
The TUFFY II Liquid Level Switch is designed and
engineered for trouble-free operation. Common problems
are discussed in terms of their symptoms and corrective
actions as recommended.
 
Usually the first indication of improper operation is failure
of the controlled equipment to function; i.e., pump will not
start (or stop), signal lamps fail to light, etc. When these
symptoms occur, whether at the time of installation or
during routine service thereafter, check for the following
potential external causes first:
• Blown fuses
• Tripped reset button(s)
• Open power switch
• Faulty equipment controlled by level switch
• Defective wiring to level switch
  II 
If a thorough inspection of these possible conditions fails to
locate the cause of the problem, proceed to a check of the
TUFFY II switch mechanism.
1. Disconnect power to the level switch.
2. Remove switch housing cover.
3. Disconnect power wiring from switch mechanism.
4. Examine the switch actuating arm and magnet assembly for
evidence of binding or wiring interference. .
The switch and magnet assembly must move throughout its
entire range of motion without interference. If there is any
binding, the ENTIRE switch mechanism (switch and
magnet assembly) must be replaced.
44-607 Tuffy®II Liqui Level Switch
10
Actuating Arm
Magnet





Float Magnet
Non-magnetic
Float holder
(pressure boundary)
Switch Magnet
Assembly

5. If the switch mechanism does move freely, use an electrical
continuity checker to determine if the switch is electrically
functional. Refer to  & on page 6 for the
appropriate wiring diagram. If the switch operates properly
when moved mechanically but not when electrically activat-
ed, the switch must be replaced.
6. If the switch functions properly both mechanically and elec-
trically but does not activate when the float changes posi-
tion, remove level switch from service. Check the float
assembly for obstructions or accumulation of particles
which may cause binding. If binding is present in the float
assembly and cannot be cleared by normal cleaning proce-
dures, the entire control must be replaced.
7. If the complete TUFFY II level switch operates properly
when removed from service, check to ensure that liquid is
entering the tank or vessel. A closed valve or clogged
pipeline may prevent movement of the liquid in the vessel.
8. Check the float to make sure it is buoyant in the liquid
(tank or vessel must have adequate level).
9. If the float is determined to be filled with liquid or is
collapsed, the entire level switch must be replaced. Do not
attempt to repair the float.
If all the components of the level switch are in operating
condition, the trouble is located external to the level switch.
Repeat inspection of external conditions as described in
Section 2.3.1, External Causes.
NOTE: When in oubt about the con ition or performance of a
TUFFY II control, consult the factory for further instructions.
44-607 Tuffy®II Liqui Level Switch 11

2.4 Preventive Maintenance
Periodic inspections are a necessary means to keep your level
control in good working order. This control is a safety device
that protects the valuable equipment it serves. A systematic
program of preventive maintenance should be implemented
when the control is placed into service. If the following
instructions are observed, your control will provide reliable
protection of your equipment for many years.
 
1. Keep control clean.
Be sure the switch housing cover is always in place. This
cover is designed to keep dust and dirt from interfering with
the switch mechanism operation. It also protects against
damaging moisture and acts as a safety feature by keeping
bare wires and terminals from being exposed. Should the
housing cover become damaged or misplaced, obtain a
replacement immediately.
2. Inspect switch mechanisms, terminals, and connections
monthly.
TUFFY II level switches may at times be exposed to excessive
heat or moisture. Under such conditions insulation on
electrical wires may become brittle, eventually breaking
or peeling away. The resulting bare wires can cause short
circuits. Check wiring carefully and replace at the first sign
of brittle insulation.
Vibration may sometimes cause terminal screws to loosen.
Check all terminal connections to ensure that screws are tight.
Check wiring carefully and repair or replace if necessary.
NOTE: It is recommen e that spare switches, housing covers an
O-rings be kept on han at all times.
3. Inspect entire TUFFY II unit periodically.
A periodic cleaning of the float and counterweight assembly
will ensure continued free movement of the mechanism.
44-607 Tuffy®II Liqui Level Switch
12

44-607 Tuffy®II Liqui Level Switch 13
 
1. NEVER leave the switch housing cover off of the control
longer than is necessary to make routine inspections.
2. NEVER place a jumper wire across terminals to “cut-out”
the control. If a jumper is necessary for test purposes,
ensure that it is removed before placing the control into
service.
3. NEVER attempt to make adjustments to or replace switches
without reading instructions carefully. When in doubt,
consult the factory or your local representative.
4. NEVER use in systems containing iron particles. The
magnet in the float assembly can attract the particles and
become jammed.
5. NEVER put insulation over the switch housing.
 
1. Have the proper replacement switch mechanism on hand.
See Section 2.6.1 on page 14 for replacement parts.
2. Remove housing cover.
3. Remove the four screws in the corners of the switch
mounting bracket and remove switch mechanism and
magnet assembly.
4. Place new mechanism into the housing.
NOTE: Looking into the switch housing with the con uit connection
pointing ownwar , the correct orientation of the switch mech-
anism is with the green hea groun screw on the right han
si e of the enclosure.
5. Once it is properly placed, secure the mechanism into the
housing by replacing the four screws in the corners of the
mounting bracket.
6. By moving the level in the vessel or by moving the float by
hand, ensure that the switch actuates properly.
7. Replace housing cover.

2.6 Parts
 
 
  
1 Switch Mechanism See replacement parts chart.
44-607 Tuffy®II Liqui Level Switch
14
2.5 Agency Approvals
   
 T3X-XXXX-XXA Explosion Proof Class I, Div 1; Groups B, C, D
T3X-XXXX-XXB Class II, Div 1; Groups E, F, G
Class III, Type 4X IP66
 T3X-XXXX-XXC Explosion Proof Class I, Div 1; Groups B, C, D
T3X-XXXX-XXD Class II, Div 1; Groups E, F, G
Class III, Div 1; Type 4X
 T3X-XXXX-XX1 Flame Proof II 1/2 G Ex II C T6 Ga/Gb
T3X-XXXX-XX2 IP66
T3X-XXXX-XX3
T3X-XXXX-XX4
T3X-XXXX-XXM Intrinsically Safe ➀II 1G EEx ia II C T6/T4
T3X-XXXX-XXN IP66
T3X-XXXX-XXP
T3X-XXXX-XXR
 T3X-XXXX-XX1 Flame Proof Ex IIC T6 Ga/Gb
T3X-XXXX-XX2 IP66
T3X-XXXX-XX3
T3X-XXXX-XX4
 T3X-XXXX-XXX Low Voltage Directives Installation Category II
Pollution Degree 2
Special con itions for safe use:
➀ When the material is equippe with an aluminum enclosure, all
precautions shall be taken to avoi all impacts or frictions which
can result in the ignition of the potentially explosive atmosphere.


SPDT silver contacts 31-5144-001
DPDT silver contacts 31-5146-001
SPDT gol contacts 31-5144-002
DPDT gol contacts 31-5146-002
HS SPDT silver contacts 31-5145-001
HS SPDT gol contacts 31-5145-002


FM/CSA XP Cast Aluminum 089-6609-001
FM/CSA XP Cast Iron 089-6609-002
ATEX XP Cast Aluminum 089-6609-003
ATEX XP Cast Iron 089-6609-004
ATEX IS Cast Aluminum 089-6609-005
ATEX IS Cast Iron 089-6609-006
 12-2201-240
Certificate ISSeP10ATEX032,
applie stan ar s EN60079-0:2009,
EN60079-1:2007 an
EN60079-26:2007
Certificate ISSeP00ATEX010X
applie stan ar s EN50014:1999,
EN50020:1994 an EN50284:1999
Certificate BKI13.0006 applie
stan ar s IEC60079-0:2011,
IEC60079-1:2007, IEC60079-26:2006
2006/95/EC
Per Horizontal Stan ar :
EN 61010-1/1993 & Amen ment No.

2.7 Specifications
 
Output
Type Switch closure, SPDT or DPDT
Ratings Up to 10 amps @ 120 or 240 VAC, 50–60 Hz
Up to 6 amps @ 24 VDC
Up to 0.6 amps @ 120 VDC
Contacts Silver, gold plated, hermetically sealed silver,
hermetically sealed gold plated
Housing
Material Polymer coated cast aluminum or cast iron
Cable entry 3⁄4" NPT
Process Connections
Materials Carbon Steel
316/316L stainless steel
Hastelloy C
316/316L stainless steel clad carbon steel
Hastelloy C clad carbon steel
Configurations Tank 2" NPT,
3", 4", 5" & 6" ANSI Flange
Chambered: 1" top-bottom NPT
Wetted parts
Float & Trim 316/316L stainless steel or Hastelloy C
Process Conditions
Process temperature -40 to +750 °F (-40 to +400 °C) with
range ambient temperature within range
specified below
Maximum process 2630 psig @ +100 °F (181 bar @ +38 °C)
pressure
Liquid specific gravity 0.40 or greater
Environmental
Ambient temperature 0 to +100 °F (-18 to +38 °C)
range For ambient temperature outside this range,
derate maximum process temperature per
charts on pages 16–18.

Repeatability ± 0.25" (± 6mm)
44-607 Tuffy®II Liqui Level Switch 15

150
 
  
HS with silver contacts -65 to +750 °F (-54 to +399° C) -65 to +650 °F (-54 to +343 °C)
HS with gol contacts -65 to +750 °F (-54 to +399° C) -65 to +650 °F (-54 to +343 °C)
Snap with silver contacts -40 to +750 °F (-40 to +399° C) -40 to +650 °F (-40 to +343 °C)
Snap with gol contacts -40 to +375 °F (-40 to +190° C) -40 to +325 °F (-40 to +162 °C)
44-607 Tuffy®II Liqui Level Switch
16

44-607 Tuffy®II Liqui Level Switch 17
 
350

44-607 Tuffy®II Liqui Level Switch
18
 

8.23*
(209)
4.39
(112)
3.35
(85)
E
D
F
G
¾" NPT
E
D
8.23*
(209)
4.39
(112)
3.35
(85)
F
G
¾" NPT
2" NPT
¾" NPT
C
D
F
G
8.29*
(211)
4.39
(112)
3.29
(84)


44-607 Tuffy®II Liqui Level Switch 1
 


This imension is specific for cast iron housing.
Subtract 0.31" for aluminum housing.
       
B — — — — — — 3.75
(95) 7.5
(190) 12.25 (311)
C8.66
(220) — — — 7.86
(199) — — — —
D3.59
(91) 3.36 (85) 3.58 (91) 3.59
(91) 3.33 (85) 6.78 (172) 13.62 (346) 18.54
(471) 24.76 (629)
E8.72
(221) 8.02 (204) 7.50 (190) 7.97
(202) 7.92 (201) 17.62 (448) 12.86 (327 16.61
(422) 21.36 (543)
F2.00
(51) 2.00 (51) 2.38 (60) 2.00
(51) 2.00 (51) 2.66 (68) 2.66 (68)
G5.25
(133) 4.55 (116) 4.00 (102) 4.50
(114) 4.45 (113) 6.00 (152) 6.00 (152)
Maximum
Nozzle Length 3.29 (84) 3.35 (85) 3.35 (85) 3.35
(85) 3.29 (84) 5.80 (147) 4.35 (110)


44-607 Tuffy®II Liqui Level Switch
20
8.23*
(209)
4.39
(112)
3.35
(85)
E
D
B
F
G
¾" NPT
(2) 1" NPT
2" NPT
1.31
(33)
1.31
(33)
6.40
(163) 11.25 .12
(286 3)
4.50
(114)
Dia.

 

This imension is specific for cast iron housing.
Subtract 0.31" for aluminum housing.

